SAP Message REB_GENERATOR090 - Activation of working set structure &1 failed

Diagnosis
Activation of working set structure &v1& failed.
A working set structure is a standard structure. It must fulfill certainminimum requirements in terms of consistency before it can be activatedby the DDIC. The problem is probably due to an error in the definitionof the working set structure or a program error.

System Response
The working set structure &v1& is not activated.

Procedure
Inform your system administrator.

Procedure for System Administration
Contact your support organization.